elevation

I sold my bike with the carb that dale jetted. When riding at 6,000 feet, it worked ok but sounded like chewbacca if I whacked the throttle open. Anyway, I really liked the power delivery, and it really worked well for sea level to about 4-5k feet where I usually ride. Thing is I...

so just got an 07 Berg 550FE from a guy in CA and I am in Utah and the guy before me did not do anything for jetting so I have to assume stock: Keihin FCR-MX 41 Carb Carb ID #: 4125D Main Jet 182 Main Air 200 Jet Needle OBDVT Idle Air 100 Idle Jet 38 Starting Jet 85 Needle position 5th...

I am looking for some feedback here with my fuel screw. I am jetted for about 3,000 feet elevation. Im at 1 3/4 out on fuel screw and don't have the other numbers right now, but runs fine there. At 6,000 to 7000 feet I ran rich even at 1 1/2 turns out.( Plug was black). I don't go there too...